期刊
MASS SPECTROMETRY REVIEWS
卷 38, 期 2, 页码 187-201出版社
WILEY
DOI: 10.1002/mas.21568
关键词
free radical-initiated peptide sequencing FRIPS; peptide cross-linking; protein 3D-structure
类别
资金
- DFG [Si 867/15-2, SCHA 871/7-2]
- Alexander-von-Humboldt Foundation
Free radical-initiated peptide sequencing (FRIPS) has recently been introduced as an analytical strategy to create peptide radical ions in a predictable and effective way by collisional activation of specifically modified peptides ions. FRIPS is based on the unimolecular dissociation of open-shell ions and yields fragments that resemble those obtained by electron capture dissociation (ECD) or electron transfer dissociation (ETD). In this review article, we describe the fundamentals of FRIPS and highlight its fruitful combination with chemical cross-linking/mass spectrometry (MS) as a highly promising option to derive complementary structural information of peptides and proteins. FRIPS does not only yield exhaustive sequence information of cross-linked peptides, but also defines the exact cross-linking sites of the connected peptides. The development of more advanced FRIPS cross-linkers that extend the FRIPS-based cross-linking/MS approach to the study of large protein assemblies and protein interaction networks can be eagerly anticipated.
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